System and method for mold insert venting and venting gas entrapment in any molding device
AssigneeAarKel Tool and Die Inc
InventorsVilas Ravindra Dulipeta, Larry Delaey
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Abstract
The present invention is directed to the design and production of a venting system contained in mold inserts for polymer grille formation, as well as a method for venting gas entrapment in any molding device. During the forming process of polymer grilles or any injection molded product, gas accumulates in the mold which needs to be vented out in a safe and effective manner. Venting out the gas without imposing alterations or blemishes on the product becomes a challenge. The present invention provides a solution to this issue through the use of porous material in the forming portion which allows the gas to escape from the mold without the use of vent apertures placed in the forming portion of the mold insert.
Claims22
A system for venting gases in a mold insert constructed in a plurality of layers, said system comprising:
- a forming layer of porous steel;
- a middle layer of solid steel;
- a base layer of solid steel;
- a plurality of vent channels within said middle layer and said base layer;
- and
- a plurality of cooling waterlines within said middle layer.
A method for venting gases from a mold insert, said method comprising:
- inserting a liquid polymer into a mold insert, wherein said mold insert contains a plurality of porous slots, a plurality of vent channels connected to said plurality of porous slots and at least one vent channel exhaust, and wherein said liquid polymer flows down at least one rib section of said mold insert;
- venting, via said plurality of porous slots, at least one gas from said mold insert into said plurality of vent channels, wherein said plurality of vent channels are connected to said at least one vent channel exhaust;
- and
- exhausting said at least one gas via said at least one vent channel exhaust.
A system for venting gases in a mold insert constructed in a plurality of layers, said system comprising:
- a forming layer of solid steel containing a plurality of porous slots, wherein a top-most portion of said forming layer contains a raised grid pattern;
- a middle layer of solid steel, wherein said middle layer further comprises a plurality of vent channels and a plurality of cooling waterlines;
- and
- a base layer of solid steel, wherein said base layer contains a plurality of vent channels in alignment with said plurality of vent channels of said middle layer.
Dependencies are inferred from the claim text.